You presuppose the wild animal can understand a running wheel, something it never encountered before.
The mice, on seeing something novel, did what that normally do and try to climb all over it looking for food. They then got stuck running on it, not realizing they were getting nowhere.
The mice, on seeing something novel, did what that normally do and try to climb all over it looking for food. They then got stuck running on it, not realizing they were getting nowhere.